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NHTSA ID Number: 10187419
Manufacturer Communication Number: 20NA224
Summary
This service bulletin provides a procedure to inspect the A/C compressor failure due to a combination of low refrigerant and/or PAG oil to correct a condition of Air Conditioning Blows Warm Air and/or Does Not Get Cold.
5 Affected Products
Vehicles
MAKE | MODEL | YEAR |
CADILLAC | XT4 | 2019-2020 |
CHEVROLET | MALIBU | 2018-2020 |
SEOCONTENT-START
Service Bulletin Bulletin No.: 20-NA-224
Date: December, 2020
TECHNICAL
Subject: Air Conditioning Blows Warm Air and/or Does Not Get Cold
Brand: Model:
Model Year: Breakpoint Date:
Engine: Transmission:
from to from to
Cadillac XT4
2018 2020 July
01, 2019 Present All All
Chevrolet Malibu
Involved Region or Country North America, Europe, Russia, Middle East, Israel, Palestine
Condition Some customers may comment that the air conditioning (A/C) is blowing warm air and/or
does not get cold.
Cause This condition may be caused by an A/C compressor failure due to a combination of low
refrigerant and/or PAG oil.
Correction Prior to replacement of the A/C compressor, perform the following Service Procedure.
Service Procedure
1. Confirm that the A/C compressor is seized.
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1.1. Check the A/C compressor housings for signs
of cracks (XT4 and Malibu) as shown in the
picture above.
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Page 2 December, 2020 Bulletin No.: 20-NA-224
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1.2. Check the clutch hub for signs of the rubber
being torn/separated (1) (Malibu ONLY
(RPOs LFV, LTG)) and/or signs of melted
rubber (2) (XT4 and Malibu (RPO L3T))
shown in the pictures above.
1.3. Attempt to manually rotate the hub/shaft near
the center bolt. If the hub/shaft rotates freely
and there are no signs of cracks or damage to
the hub, proceed to step 2.
1.4. If the hub/shaft does not rotate or the
compressor is seized, replace the A/C
compressor and oil balancing then proceed to
step 2. Refer to Air Conditioning Compressor
Replacement and Air Conditioning
Compressor Oil Balancing in SI.
2. Inspect the A/C system for leaks.
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2.1. Inspect the Internal Heat Exchanger (IHX)
welds for signs of cracks (XT4 and Malibu) as
shown in the picture above.
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2.2. Inspect the condenser, including the receiver
and dehydrator cap, and also inspect for any
signs of brazed joints and connections (XT4
and Malibu) as shown in the picture above.
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2.3. Inspect the A/C compressor hose to see if the
hose is rubbing against the fan shroud and
exhaust manifold (Malibu ONLY) as shown in
the picture above.
2.4. If leaks are not found at these areas, continue
leak testing the rest of the A/C system. Refer
to Leak Testing (R-1234yf) diagnostic found in
the HVAC section in SI.
Bulletin No.: 20-NA-224 December, 2020 Page 3
Warranty Information
For vehicles repaired under the Bumper-to-Bumper
coverage (Canada Base Warranty coverage), use the
following labor operation. Reference the Applicable
Warranties section of Investigate Vehicle History (IVH)
for coverage information.
Labor
Operation
Description Labor Time
4486098* A/C System Leak Detection
for Compressor Seize
0.5 hr
*This is a unique Labor Operation for bulletin use only.
Version 1
Modified Released December 10, 2020
SEOCONTENT-END
1 Associated Document
Manufacturer Communications
Bulletin No.: 20-NA-224
Date: December, 2020
https://www.nhtsa.gov/recalls?nhtsaId=10187419
MC-10187419-9999.pdf 146.555KB
“This site contains affiliate links for which OEMDTC may be compensated” |
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